-85.13% is the change from 538 to 80
Calculation steps:
[( 80 - 538 ) ÷ 538] x 100 = -85.13%
Formula
Percentage change = [(80 - 538) / 538] x 100
Subtract the new number by the original number
80 - 538 = -458
-458 ÷ 538 = -0.8513011152416357
-0.8513011152416357 x 100 = -85.13%