90.6% is the change from 351 to 669
Calculation steps:
[( 669 - 351 ) ÷ 351] x 100 = 90.6%
Formula
Percentage change = [(669 - 351) / 351] x 100
Subtract the new number by the original number
669 - 351 = 318
318 ÷ 351 = 0.905982905982906
0.905982905982906 x 100 = 90.6%