83.85% is the change from 390 to 717
Calculation steps:
[( 717 - 390 ) ÷ 390] x 100 = 83.85%
Formula
Percentage change = [(717 - 390) / 390] x 100
Subtract the new number by the original number
717 - 390 = 327
327 ÷ 390 = 0.8384615384615385
0.8384615384615385 x 100 = 83.85%