-85.1% is the change from 537 to 80
Calculation steps:
[( 80 - 537 ) ÷ 537] x 100 = -85.1%
Formula
Percentage change = [(80 - 537) / 537] x 100
Subtract the new number by the original number
80 - 537 = -457
-457 ÷ 537 = -0.851024208566108
-0.851024208566108 x 100 = -85.1%