20.8% is the change from 721 to 871
Calculation steps:
[( 871 - 721 ) ÷ 721] x 100 = 20.8%
Formula
Percentage change = [(871 - 721) / 721] x 100
Subtract the new number by the original number
871 - 721 = 150
150 ÷ 721 = 0.20804438280166435
0.20804438280166435 x 100 = 20.8%