66.95% is the change from 581 to 970
Calculation steps:
[( 970 - 581 ) ÷ 581] x 100 = 66.95%
Formula
Percentage change = [(970 - 581) / 581] x 100
Subtract the new number by the original number
970 - 581 = 389
389 ÷ 581 = 0.6695352839931153
0.6695352839931153 x 100 = 66.95%