-81.21% is the change from 841 to 158
Calculation steps:
[( 158 - 841 ) ÷ 841] x 100 = -81.21%
Formula
Percentage change = [(158 - 841) / 841] x 100
Subtract the new number by the original number
158 - 841 = -683
-683 ÷ 841 = -0.812128418549346
-0.812128418549346 x 100 = -81.21%