-89.67% is the change from 542 to 56
Calculation steps:
[( 56 - 542 ) ÷ 542] x 100 = -89.67%
Formula
Percentage change = [(56 - 542) / 542] x 100
Subtract the new number by the original number
56 - 542 = -486
-486 ÷ 542 = -0.8966789667896679
-0.8966789667896679 x 100 = -89.67%