42.55% is the change from 611 to 871
Calculation steps:
[( 871 - 611 ) ÷ 611] x 100 = 42.55%
Formula
Percentage change = [(871 - 611) / 611] x 100
Subtract the new number by the original number
871 - 611 = 260
260 ÷ 611 = 0.425531914893617
0.425531914893617 x 100 = 42.55%