-51% is the change from 847 to 415
Calculation steps:
[( 415 - 847 ) ÷ 847] x 100 = -51%
Formula
Percentage change = [(415 - 847) / 847] x 100
Subtract the new number by the original number
415 - 847 = -432
-432 ÷ 847 = -0.5100354191263282
-0.5100354191263282 x 100 = -51%