310.92% is the change from 238 to 978
Calculation steps:
[( 978 - 238 ) ÷ 238] x 100 = 310.92%
Formula
Percentage change = [(978 - 238) / 238] x 100
Subtract the new number by the original number
978 - 238 = 740
740 ÷ 238 = 3.1092436974789917
3.1092436974789917 x 100 = 310.92%