-84.78% is the change from 841 to 128
Calculation steps:
[( 128 - 841 ) ÷ 841] x 100 = -84.78%
Formula
Percentage change = [(128 - 841) / 841] x 100
Subtract the new number by the original number
128 - 841 = -713
-713 ÷ 841 = -0.8478002378121284
-0.8478002378121284 x 100 = -84.78%