69.92% is the change from 389 to 661
Calculation steps:
[( 661 - 389 ) ÷ 389] x 100 = 69.92%
Formula
Percentage change = [(661 - 389) / 389] x 100
Subtract the new number by the original number
661 - 389 = 272
272 ÷ 389 = 0.699228791773779
0.699228791773779 x 100 = 69.92%