1300% is the change from 55 to 770
Calculation steps:
[( 770 - 55 ) ÷ 55] x 100 = 1300%
Formula
Percentage change = [(770 - 55) / 55] x 100
Subtract the new number by the original number
770 - 55 = 715
715 ÷ 55 = 13
13 x 100 = 1300%
Example