-81.6% is the change from 902 to 166
Calculation steps:
[( 166 - 902 ) ÷ 902] x 100 = -81.6%
Formula
Percentage change = [(166 - 902) / 902] x 100
Subtract the new number by the original number
166 - 902 = -736
-736 ÷ 902 = -0.8159645232815964
-0.8159645232815964 x 100 = -81.6%