1485% is the change from 40 to 634
Calculation steps:
[( 634 - 40 ) ÷ 40] x 100 = 1485%
Formula
Percentage change = [(634 - 40) / 40] x 100
Subtract the new number by the original number
634 - 40 = 594
594 ÷ 40 = 14.85
14.85 x 100 = 1485%
Example