91.23% is the change from 399 to 763
Calculation steps:
[( 763 - 399 ) ÷ 399] x 100 = 91.23%
Formula
Percentage change = [(763 - 399) / 399] x 100
Subtract the new number by the original number
763 - 399 = 364
364 ÷ 399 = 0.9122807017543859
0.9122807017543859 x 100 = 91.23%