109.84% is the change from 315 to 661
Calculation steps:
[( 661 - 315 ) ÷ 315] x 100 = 109.84%
Formula
Percentage change = [(661 - 315) / 315] x 100
Subtract the new number by the original number
661 - 315 = 346
346 ÷ 315 = 1.0984126984126985
1.0984126984126985 x 100 = 109.84%