-63.75% is the change from 847 to 307
Calculation steps:
[( 307 - 847 ) ÷ 847] x 100 = -63.75%
Formula
Percentage change = [(307 - 847) / 847] x 100
Subtract the new number by the original number
307 - 847 = -540
-540 ÷ 847 = -0.6375442739079102
-0.6375442739079102 x 100 = -63.75%