-80.26% is the change from 841 to 166
Calculation steps:
[( 166 - 841 ) ÷ 841] x 100 = -80.26%
Formula
Percentage change = [(166 - 841) / 841] x 100
Subtract the new number by the original number
166 - 841 = -675
-675 ÷ 841 = -0.8026159334126041
-0.8026159334126041 x 100 = -80.26%