-33.01% is the change from 815 to 546
Calculation steps:
[( 546 - 815 ) ÷ 815] x 100 = -33.01%
Formula
Percentage change = [(546 - 815) / 815] x 100
Subtract the new number by the original number
546 - 815 = -269
-269 ÷ 815 = -0.3300613496932515
-0.3300613496932515 x 100 = -33.01%