16.88% is the change from 770 to 900
Calculation steps:
[( 900 - 770 ) ÷ 770] x 100 = 16.88%
Formula
Percentage change = [(900 - 770) / 770] x 100
Subtract the new number by the original number
900 - 770 = 130
130 ÷ 770 = 0.16883116883116883
0.16883116883116883 x 100 = 16.88%