42.15% is the change from 688 to 978
Calculation steps:
[( 978 - 688 ) ÷ 688] x 100 = 42.15%
Formula
Percentage change = [(978 - 688) / 688] x 100
Subtract the new number by the original number
978 - 688 = 290
290 ÷ 688 = 0.42151162790697677
0.42151162790697677 x 100 = 42.15%