1.97% is the change from 305 to 311
Calculation steps:
[( 311 - 305 ) ÷ 305] x 100 = 1.97%
Formula
Percentage change = [(311 - 305) / 305] x 100
Subtract the new number by the original number
311 - 305 = 6
6 ÷ 305 = 0.019672131147540985
0.019672131147540985 x 100 = 1.97%