19.09% is the change from 770 to 917
Calculation steps:
[( 917 - 770 ) ÷ 770] x 100 = 19.09%
Formula
Percentage change = [(917 - 770) / 770] x 100
Subtract the new number by the original number
917 - 770 = 147
147 ÷ 770 = 0.19090909090909092
0.19090909090909092 x 100 = 19.09%