400% is the change from 154 to 770
Calculation steps:
[( 770 - 154 ) ÷ 154] x 100 = 400%
Formula
Percentage change = [(770 - 154) / 154] x 100
Subtract the new number by the original number
770 - 154 = 616
616 ÷ 154 = 4
4 x 100 = 400%
Example