-54.6% is the change from 815 to 370
Calculation steps:
[( 370 - 815 ) ÷ 815] x 100 = -54.6%
Formula
Percentage change = [(370 - 815) / 815] x 100
Subtract the new number by the original number
370 - 815 = -445
-445 ÷ 815 = -0.5460122699386503
-0.5460122699386503 x 100 = -54.6%