54.3% is the change from 639 to 986
Calculation steps:
[( 986 - 639 ) ÷ 639] x 100 = 54.3%
Formula
Percentage change = [(986 - 639) / 639] x 100
Subtract the new number by the original number
986 - 639 = 347
347 ÷ 639 = 0.543035993740219
0.543035993740219 x 100 = 54.3%