66.58% is the change from 386 to 643
Calculation steps:
[( 643 - 386 ) ÷ 386] x 100 = 66.58%
Formula
Percentage change = [(643 - 386) / 386] x 100
Subtract the new number by the original number
643 - 386 = 257
257 ÷ 386 = 0.6658031088082902
0.6658031088082902 x 100 = 66.58%