-81% is the change from 542 to 103
Calculation steps:
[( 103 - 542 ) ÷ 542] x 100 = -81%
Formula
Percentage change = [(103 - 542) / 542] x 100
Subtract the new number by the original number
103 - 542 = -439
-439 ÷ 542 = -0.8099630996309963
-0.8099630996309963 x 100 = -81%