4.15% is the change from 939 to 978
Calculation steps:
[( 978 - 939 ) ÷ 939] x 100 = 4.15%
Formula
Percentage change = [(978 - 939) / 939] x 100
Subtract the new number by the original number
978 - 939 = 39
39 ÷ 939 = 0.04153354632587859
0.04153354632587859 x 100 = 4.15%