-40.14% is the change from 847 to 507
Calculation steps:
[( 507 - 847 ) ÷ 847] x 100 = -40.14%
Formula
Percentage change = [(507 - 847) / 847] x 100
Subtract the new number by the original number
507 - 847 = -340
-340 ÷ 847 = -0.4014167650531287
-0.4014167650531287 x 100 = -40.14%