-40.59% is the change from 845 to 502
Calculation steps:
[( 502 - 845 ) ÷ 845] x 100 = -40.59%
Formula
Percentage change = [(502 - 845) / 845] x 100
Subtract the new number by the original number
502 - 845 = -343
-343 ÷ 845 = -0.4059171597633136
-0.4059171597633136 x 100 = -40.59%