57.03% is the change from 612 to 961
Calculation steps:
[( 961 - 612 ) ÷ 612] x 100 = 57.03%
Formula
Percentage change = [(961 - 612) / 612] x 100
Subtract the new number by the original number
961 - 612 = 349
349 ÷ 612 = 0.5702614379084967
0.5702614379084967 x 100 = 57.03%