112.54% is the change from 311 to 661
Calculation steps:
[( 661 - 311 ) ÷ 311] x 100 = 112.54%
Formula
Percentage change = [(661 - 311) / 311] x 100
Subtract the new number by the original number
661 - 311 = 350
350 ÷ 311 = 1.1254019292604502
1.1254019292604502 x 100 = 112.54%