-57.83% is the change from 166 to 70
Calculation steps:
[( 70 - 166 ) ÷ 166] x 100 = -57.83%
Formula
Percentage change = [(70 - 166) / 166] x 100
Subtract the new number by the original number
70 - 166 = -96
-96 ÷ 166 = -0.5783132530120482
-0.5783132530120482 x 100 = -57.83%