106.43% is the change from 311 to 642
Calculation steps:
[( 642 - 311 ) ÷ 311] x 100 = 106.43%
Formula
Percentage change = [(642 - 311) / 311] x 100
Subtract the new number by the original number
642 - 311 = 331
331 ÷ 311 = 1.0643086816720257
1.0643086816720257 x 100 = 106.43%