70.62% is the change from 388 to 662
Calculation steps:
[( 662 - 388 ) ÷ 388] x 100 = 70.62%
Formula
Percentage change = [(662 - 388) / 388] x 100
Subtract the new number by the original number
662 - 388 = 274
274 ÷ 388 = 0.7061855670103093
0.7061855670103093 x 100 = 70.62%