-54.88% is the change from 820 to 370
Calculation steps:
[( 370 - 820 ) ÷ 820] x 100 = -54.88%
Formula
Percentage change = [(370 - 820) / 820] x 100
Subtract the new number by the original number
370 - 820 = -450
-450 ÷ 820 = -0.5487804878048781
-0.5487804878048781 x 100 = -54.88%