30.64% is the change from 705 to 921
Calculation steps:
[( 921 - 705 ) ÷ 705] x 100 = 30.64%
Formula
Percentage change = [(921 - 705) / 705] x 100
Subtract the new number by the original number
921 - 705 = 216
216 ÷ 705 = 0.30638297872340425
0.30638297872340425 x 100 = 30.64%