-42.33% is the change from 815 to 470
Calculation steps:
[( 470 - 815 ) ÷ 815] x 100 = -42.33%
Formula
Percentage change = [(470 - 815) / 815] x 100
Subtract the new number by the original number
470 - 815 = -345
-345 ÷ 815 = -0.4233128834355828
-0.4233128834355828 x 100 = -42.33%