122.74% is the change from 343 to 764
Calculation steps:
[( 764 - 343 ) ÷ 343] x 100 = 122.74%
Formula
Percentage change = [(764 - 343) / 343] x 100
Subtract the new number by the original number
764 - 343 = 421
421 ÷ 343 = 1.227405247813411
1.227405247813411 x 100 = 122.74%