Voir la source de Modèle:VariationPicto

<includeonly>{{#if: {{{1|}}}
 | {{#if: {{{2|}}}
    | {{#switch:  {{#expr: ( {{{2}}} > {{{1}}} ) - ( {{{2}}} < {{{1}}} ) }}
       | 0 = <abbr class="abbr" style="color:#08f;" title="stable">►</abbr>&nbsp;
       | 1 = <abbr class="abbr" style="color:#0c3;" title="en augmentation">▲</abbr>&nbsp;+
       |-1 = <abbr class="abbr" style="color:#f00;" title="en diminution">▼</abbr>&nbsp;
      }}<!--
   -->{{#ifeq: {{{1}}} | 0 <!--
   -->| {{#ifeq: {{{2}}} | 0 | 0 | ∞ }}<!--
   -->| {{formatnum: {{#expr: (({{{2}}} - {{{1}}}) / {{{1}}}) * 100 round {{{3|2}}} }} }} }}<!--
   -->&#8239;%
   }}
}}</includeonly>