-33.17% is the change from 811 to 542
Calculation steps:
[( 542 - 811 ) ÷ 811] x 100 = -33.17%
Formula
Percentage change = [(542 - 811) / 811] x 100
Subtract the new number by the original number
542 - 811 = -269
-269 ÷ 811 = -0.3316892725030826
-0.3316892725030826 x 100 = -33.17%