350% is the change from 148 to 666
Calculation steps:
[( 666 - 148 ) ÷ 148] x 100 = 350%
Formula
Percentage change = [(666 - 148) / 148] x 100
Subtract the new number by the original number
666 - 148 = 518
518 ÷ 148 = 3.5
3.5 x 100 = 350%
Example