-67.94% is the change from 970 to 311
Calculation steps:
[( 311 - 970 ) ÷ 970] x 100 = -67.94%
Formula
Percentage change = [(311 - 970) / 970] x 100
Subtract the new number by the original number
311 - 970 = -659
-659 ÷ 970 = -0.6793814432989691
-0.6793814432989691 x 100 = -67.94%