-39.2% is the change from 847 to 515
Calculation steps:
[( 515 - 847 ) ÷ 847] x 100 = -39.2%
Formula
Percentage change = [(515 - 847) / 847] x 100
Subtract the new number by the original number
515 - 847 = -332
-332 ÷ 847 = -0.3919716646989374
-0.3919716646989374 x 100 = -39.2%