-68.58% is the change from 977 to 307
Calculation steps:
[( 307 - 977 ) ÷ 977] x 100 = -68.58%
Formula
Percentage change = [(307 - 977) / 977] x 100
Subtract the new number by the original number
307 - 977 = -670
-670 ÷ 977 = -0.6857727737973388
-0.6857727737973388 x 100 = -68.58%