-54.85% is the change from 680 to 307
Calculation steps:
[( 307 - 680 ) ÷ 680] x 100 = -54.85%
Formula
Percentage change = [(307 - 680) / 680] x 100
Subtract the new number by the original number
307 - 680 = -373
-373 ÷ 680 = -0.5485294117647059
-0.5485294117647059 x 100 = -54.85%