7700% is the change from 1 to 78
Calculation steps:
[( 78 - 1 ) ÷ 1] x 100 = 7700%
Formula
Percentage change = [(78 - 1) / 1] x 100
Subtract the new number by the original number
78 - 1 = 77
77 ÷ 1 = 77
77 x 100 = 7700%
Example