-65.88% is the change from 970 to 331
Calculation steps:
[( 331 - 970 ) ÷ 970] x 100 = -65.88%
Formula
Percentage change = [(331 - 970) / 970] x 100
Subtract the new number by the original number
331 - 970 = -639
-639 ÷ 970 = -0.6587628865979381
-0.6587628865979381 x 100 = -65.88%