-96.31% is the change from 542 to 20
Calculation steps:
[( 20 - 542 ) ÷ 542] x 100 = -96.31%
Formula
Percentage change = [(20 - 542) / 542] x 100
Subtract the new number by the original number
20 - 542 = -522
-522 ÷ 542 = -0.9630996309963099
-0.9630996309963099 x 100 = -96.31%