1291.3% is the change from 46 to 640
Calculation steps:
[( 640 - 46 ) ÷ 46] x 100 = 1291.3%
Formula
Percentage change = [(640 - 46) / 46] x 100
Subtract the new number by the original number
640 - 46 = 594
594 ÷ 46 = 12.91304347826087
12.91304347826087 x 100 = 1291.3%