91.25% is the change from 400 to 765
Calculation steps:
[( 765 - 400 ) ÷ 400] x 100 = 91.25%
Formula
Percentage change = [(765 - 400) / 400] x 100
Subtract the new number by the original number
765 - 400 = 365
365 ÷ 400 = 0.9125
0.9125 x 100 = 91.25%