211.97% is the change from 309 to 964
Calculation steps:
[( 964 - 309 ) ÷ 309] x 100 = 211.97%
Formula
Percentage change = [(964 - 309) / 309] x 100
Subtract the new number by the original number
964 - 309 = 655
655 ÷ 309 = 2.1197411003236244
2.1197411003236244 x 100 = 211.97%