-40.45% is the change from 843 to 502
Calculation steps:
[( 502 - 843 ) ÷ 843] x 100 = -40.45%
Formula
Percentage change = [(502 - 843) / 843] x 100
Subtract the new number by the original number
502 - 843 = -341
-341 ÷ 843 = -0.4045077105575326
-0.4045077105575326 x 100 = -40.45%