-40.95% is the change from 862 to 509
Calculation steps:
[( 509 - 862 ) ÷ 862] x 100 = -40.95%
Formula
Percentage change = [(509 - 862) / 862] x 100
Subtract the new number by the original number
509 - 862 = -353
-353 ÷ 862 = -0.4095127610208817
-0.4095127610208817 x 100 = -40.95%