15.06% is the change from 850 to 978
Calculation steps:
[( 978 - 850 ) ÷ 850] x 100 = 15.06%
Formula
Percentage change = [(978 - 850) / 850] x 100
Subtract the new number by the original number
978 - 850 = 128
128 ÷ 850 = 0.15058823529411763
0.15058823529411763 x 100 = 15.06%