-60.13% is the change from 770 to 307
Calculation steps:
[( 307 - 770 ) ÷ 770] x 100 = -60.13%
Formula
Percentage change = [(307 - 770) / 770] x 100
Subtract the new number by the original number
307 - 770 = -463
-463 ÷ 770 = -0.6012987012987013
-0.6012987012987013 x 100 = -60.13%