91.86% is the change from 344 to 660
Calculation steps:
[( 660 - 344 ) ÷ 344] x 100 = 91.86%
Formula
Percentage change = [(660 - 344) / 344] x 100
Subtract the new number by the original number
660 - 344 = 316
316 ÷ 344 = 0.9186046511627907
0.9186046511627907 x 100 = 91.86%