-68.5% is the change from 527 to 166
Calculation steps:
[( 166 - 527 ) ÷ 527] x 100 = -68.5%
Formula
Percentage change = [(166 - 527) / 527] x 100
Subtract the new number by the original number
166 - 527 = -361
-361 ÷ 527 = -0.6850094876660342
-0.6850094876660342 x 100 = -68.5%