218.33% is the change from 311 to 990
Calculation steps:
[( 990 - 311 ) ÷ 311] x 100 = 218.33%
Formula
Percentage change = [(990 - 311) / 311] x 100
Subtract the new number by the original number
990 - 311 = 679
679 ÷ 311 = 2.1832797427652735
2.1832797427652735 x 100 = 218.33%