111.86% is the change from 312 to 661
Calculation steps:
[( 661 - 312 ) ÷ 312] x 100 = 111.86%
Formula
Percentage change = [(661 - 312) / 312] x 100
Subtract the new number by the original number
661 - 312 = 349
349 ÷ 312 = 1.1185897435897436
1.1185897435897436 x 100 = 111.86%