-32.15% is the change from 815 to 553
Calculation steps:
[( 553 - 815 ) ÷ 815] x 100 = -32.15%
Formula
Percentage change = [(553 - 815) / 815] x 100
Subtract the new number by the original number
553 - 815 = -262
-262 ÷ 815 = -0.3214723926380368
-0.3214723926380368 x 100 = -32.15%