-24.14% is the change from 841 to 638
Calculation steps:
[( 638 - 841 ) ÷ 841] x 100 = -24.14%
Formula
Percentage change = [(638 - 841) / 841] x 100
Subtract the new number by the original number
638 - 841 = -203
-203 ÷ 841 = -0.2413793103448276
-0.2413793103448276 x 100 = -24.14%