215.16% is the change from 310 to 977
Calculation steps:
[( 977 - 310 ) ÷ 310] x 100 = 215.16%
Formula
Percentage change = [(977 - 310) / 310] x 100
Subtract the new number by the original number
977 - 310 = 667
667 ÷ 310 = 2.1516129032258067
2.1516129032258067 x 100 = 215.16%