21.82% is the change from 770 to 938
Calculation steps:
[( 938 - 770 ) ÷ 770] x 100 = 21.82%
Formula
Percentage change = [(938 - 770) / 770] x 100
Subtract the new number by the original number
938 - 770 = 168
168 ÷ 770 = 0.21818181818181817
0.21818181818181817 x 100 = 21.82%