350% is the change from 10 to 45
Calculation steps:
[( 45 - 10 ) ÷ 10] x 100 = 350%
Formula
Percentage change = [(45 - 10) / 10] x 100
Subtract the new number by the original number
45 - 10 = 35
35 ÷ 10 = 3.5
3.5 x 100 = 350%
Example