-88.19% is the change from 542 to 64
Calculation steps:
[( 64 - 542 ) ÷ 542] x 100 = -88.19%
Formula
Percentage change = [(64 - 542) / 542] x 100
Subtract the new number by the original number
64 - 542 = -478
-478 ÷ 542 = -0.8819188191881919
-0.8819188191881919 x 100 = -88.19%