89.4% is the change from 349 to 661
Calculation steps:
[( 661 - 349 ) ÷ 349] x 100 = 89.4%
Formula
Percentage change = [(661 - 349) / 349] x 100
Subtract the new number by the original number
661 - 349 = 312
312 ÷ 349 = 0.8939828080229226
0.8939828080229226 x 100 = 89.4%