49.1% is the change from 611 to 911
Calculation steps:
[( 911 - 611 ) ÷ 611] x 100 = 49.1%
Formula
Percentage change = [(911 - 611) / 611] x 100
Subtract the new number by the original number
911 - 611 = 300
300 ÷ 611 = 0.4909983633387889
0.4909983633387889 x 100 = 49.1%