85.54% is the change from 415 to 770
Calculation steps:
[( 770 - 415 ) ÷ 415] x 100 = 85.54%
Formula
Percentage change = [(770 - 415) / 415] x 100
Subtract the new number by the original number
770 - 415 = 355
355 ÷ 415 = 0.8554216867469879
0.8554216867469879 x 100 = 85.54%