42.32% is the change from 612 to 871
Calculation steps:
[( 871 - 612 ) ÷ 612] x 100 = 42.32%
Formula
Percentage change = [(871 - 612) / 612] x 100
Subtract the new number by the original number
871 - 612 = 259
259 ÷ 612 = 0.42320261437908496
0.42320261437908496 x 100 = 42.32%