65.4% is the change from 581 to 961
Calculation steps:
[( 961 - 581 ) ÷ 581] x 100 = 65.4%
Formula
Percentage change = [(961 - 581) / 581] x 100
Subtract the new number by the original number
961 - 581 = 380
380 ÷ 581 = 0.6540447504302926
0.6540447504302926 x 100 = 65.4%