80.61% is the change from 423 to 764
Calculation steps:
[( 764 - 423 ) ÷ 423] x 100 = 80.61%
Formula
Percentage change = [(764 - 423) / 423] x 100
Subtract the new number by the original number
764 - 423 = 341
341 ÷ 423 = 0.806146572104019
0.806146572104019 x 100 = 80.61%