-92.62% is the change from 542 to 40
Calculation steps:
[( 40 - 542 ) ÷ 542] x 100 = -92.62%
Formula
Percentage change = [(40 - 542) / 542] x 100
Subtract the new number by the original number
40 - 542 = -502
-502 ÷ 542 = -0.9261992619926199
-0.9261992619926199 x 100 = -92.62%