39.81% is the change from 623 to 871
Calculation steps:
[( 871 - 623 ) ÷ 623] x 100 = 39.81%
Formula
Percentage change = [(871 - 623) / 623] x 100
Subtract the new number by the original number
871 - 623 = 248
248 ÷ 623 = 0.39807383627608345
0.39807383627608345 x 100 = 39.81%