-65.98% is the change from 970 to 330
Calculation steps:
[( 330 - 970 ) ÷ 970] x 100 = -65.98%
Formula
Percentage change = [(330 - 970) / 970] x 100
Subtract the new number by the original number
330 - 970 = -640
-640 ÷ 970 = -0.6597938144329897
-0.6597938144329897 x 100 = -65.98%