-19.72% is the change from 847 to 680
Calculation steps:
[( 680 - 847 ) ÷ 847] x 100 = -19.72%
Formula
Percentage change = [(680 - 847) / 847] x 100
Subtract the new number by the original number
680 - 847 = -167
-167 ÷ 847 = -0.19716646989374262
-0.19716646989374262 x 100 = -19.72%