75.8% is the change from 438 to 770
Calculation steps:
[( 770 - 438 ) ÷ 438] x 100 = 75.8%
Formula
Percentage change = [(770 - 438) / 438] x 100
Subtract the new number by the original number
770 - 438 = 332
332 ÷ 438 = 0.7579908675799086
0.7579908675799086 x 100 = 75.8%