-53.99% is the change from 815 to 375
Calculation steps:
[( 375 - 815 ) ÷ 815] x 100 = -53.99%
Formula
Percentage change = [(375 - 815) / 815] x 100
Subtract the new number by the original number
375 - 815 = -440
-440 ÷ 815 = -0.5398773006134969
-0.5398773006134969 x 100 = -53.99%
Example