-39.81% is the change from 834 to 502
Calculation steps:
[( 502 - 834 ) ÷ 834] x 100 = -39.81%
Formula
Percentage change = [(502 - 834) / 834] x 100
Subtract the new number by the original number
502 - 834 = -332
-332 ÷ 834 = -0.3980815347721823
-0.3980815347721823 x 100 = -39.81%