213.5% is the change from 311 to 975
Calculation steps:
[( 975 - 311 ) ÷ 311] x 100 = 213.5%
Formula
Percentage change = [(975 - 311) / 311] x 100
Subtract the new number by the original number
975 - 311 = 664
664 ÷ 311 = 2.135048231511254
2.135048231511254 x 100 = 213.5%