78.79% is the change from 99 to 177
Calculation steps:
[( 177 - 99 ) ÷ 99] x 100 = 78.79%
Formula
Percentage change = [(177 - 99) / 99] x 100
Subtract the new number by the original number
177 - 99 = 78
78 ÷ 99 = 0.7878787878787878
0.7878787878787878 x 100 = 78.79%