-40.02% is the change from 847 to 508
Calculation steps:
[( 508 - 847 ) ÷ 847] x 100 = -40.02%
Formula
Percentage change = [(508 - 847) / 847] x 100
Subtract the new number by the original number
508 - 847 = -339
-339 ÷ 847 = -0.4002361275088548
-0.4002361275088548 x 100 = -40.02%