-84.82% is the change from 527 to 80
Calculation steps:
[( 80 - 527 ) ÷ 527] x 100 = -84.82%
Formula
Percentage change = [(80 - 527) / 527] x 100
Subtract the new number by the original number
80 - 527 = -447
-447 ÷ 527 = -0.8481973434535104
-0.8481973434535104 x 100 = -84.82%