1677.5% is the change from 40 to 711
Calculation steps:
[( 711 - 40 ) ÷ 40] x 100 = 1677.5%
Formula
Percentage change = [(711 - 40) / 40] x 100
Subtract the new number by the original number
711 - 40 = 671
671 ÷ 40 = 16.775
16.775 x 100 = 1677.5%
Example