81.96% is the change from 438 to 797
Calculation steps:
[( 797 - 438 ) ÷ 438] x 100 = 81.96%
Formula
Percentage change = [(797 - 438) / 438] x 100
Subtract the new number by the original number
797 - 438 = 359
359 ÷ 438 = 0.819634703196347
0.819634703196347 x 100 = 81.96%