2147.5% is the change from 40 to 899
Calculation steps:
[( 899 - 40 ) ÷ 40] x 100 = 2147.5%
Formula
Percentage change = [(899 - 40) / 40] x 100
Subtract the new number by the original number
899 - 40 = 859
859 ÷ 40 = 21.475
21.475 x 100 = 2147.5%
Example