138.01% is the change from 321 to 764
Calculation steps:
[( 764 - 321 ) ÷ 321] x 100 = 138.01%
Formula
Percentage change = [(764 - 321) / 321] x 100
Subtract the new number by the original number
764 - 321 = 443
443 ÷ 321 = 1.3800623052959502
1.3800623052959502 x 100 = 138.01%