209.68% is the change from 310 to 960
Calculation steps:
[( 960 - 310 ) ÷ 310] x 100 = 209.68%
Formula
Percentage change = [(960 - 310) / 310] x 100
Subtract the new number by the original number
960 - 310 = 650
650 ÷ 310 = 2.096774193548387
2.096774193548387 x 100 = 209.68%