-52.58% is the change from 542 to 257
Calculation steps:
[( 257 - 542 ) ÷ 542] x 100 = -52.58%
Formula
Percentage change = [(257 - 542) / 542] x 100
Subtract the new number by the original number
257 - 542 = -285
-285 ÷ 542 = -0.525830258302583
-0.525830258302583 x 100 = -52.58%