214.15% is the change from 311 to 977
Calculation steps:
[( 977 - 311 ) ÷ 311] x 100 = 214.15%
Formula
Percentage change = [(977 - 311) / 311] x 100
Subtract the new number by the original number
977 - 311 = 666
666 ÷ 311 = 2.1414790996784565
2.1414790996784565 x 100 = 214.15%