-39.79% is the change from 847 to 510
Calculation steps:
[( 510 - 847 ) ÷ 847] x 100 = -39.79%
Formula
Percentage change = [(510 - 847) / 847] x 100
Subtract the new number by the original number
510 - 847 = -337
-337 ÷ 847 = -0.39787485242030696
-0.39787485242030696 x 100 = -39.79%