89.71% is the change from 350 to 664
Calculation steps:
[( 664 - 350 ) ÷ 350] x 100 = 89.71%
Formula
Percentage change = [(664 - 350) / 350] x 100
Subtract the new number by the original number
664 - 350 = 314
314 ÷ 350 = 0.8971428571428571
0.8971428571428571 x 100 = 89.71%