51.06% is the change from 611 to 923
Calculation steps:
[( 923 - 611 ) ÷ 611] x 100 = 51.06%
Formula
Percentage change = [(923 - 611) / 611] x 100
Subtract the new number by the original number
923 - 611 = 312
312 ÷ 611 = 0.5106382978723404
0.5106382978723404 x 100 = 51.06%