-83.49% is the change from 527 to 87
Calculation steps:
[( 87 - 527 ) ÷ 527] x 100 = -83.49%
Formula
Percentage change = [(87 - 527) / 527] x 100
Subtract the new number by the original number
87 - 527 = -440
-440 ÷ 527 = -0.8349146110056926
-0.8349146110056926 x 100 = -83.49%