96.78% is the change from 311 to 612
Calculation steps:
[( 612 - 311 ) ÷ 311] x 100 = 96.78%
Formula
Percentage change = [(612 - 311) / 311] x 100
Subtract the new number by the original number
612 - 311 = 301
301 ÷ 311 = 0.9678456591639871
0.9678456591639871 x 100 = 96.78%