-34.14% is the change from 823 to 542
Calculation steps:
[( 542 - 823 ) ÷ 823] x 100 = -34.14%
Formula
Percentage change = [(542 - 823) / 823] x 100
Subtract the new number by the original number
542 - 823 = -281
-281 ÷ 823 = -0.34143377885783716
-0.34143377885783716 x 100 = -34.14%