215.48% is the change from 310 to 978
Calculation steps:
[( 978 - 310 ) ÷ 310] x 100 = 215.48%
Formula
Percentage change = [(978 - 310) / 310] x 100
Subtract the new number by the original number
978 - 310 = 668
668 ÷ 310 = 2.1548387096774193
2.1548387096774193 x 100 = 215.48%