-87.48% is the change from 527 to 66
Calculation steps:
[( 66 - 527 ) ÷ 527] x 100 = -87.48%
Formula
Percentage change = [(66 - 527) / 527] x 100
Subtract the new number by the original number
66 - 527 = -461
-461 ÷ 527 = -0.8747628083491461
-0.8747628083491461 x 100 = -87.48%