4047.62% is the change from 21 to 871
Calculation steps:
[( 871 - 21 ) ÷ 21] x 100 = 4047.62%
Formula
Percentage change = [(871 - 21) / 21] x 100
Subtract the new number by the original number
871 - 21 = 850
850 ÷ 21 = 40.476190476190474
40.476190476190474 x 100 = 4047.62%