-33.25% is the change from 812 to 542
Calculation steps:
[( 542 - 812 ) ÷ 812] x 100 = -33.25%
Formula
Percentage change = [(542 - 812) / 812] x 100
Subtract the new number by the original number
542 - 812 = -270
-270 ÷ 812 = -0.33251231527093594
-0.33251231527093594 x 100 = -33.25%