69.5% is the change from 377 to 639
Calculation steps:
[( 639 - 377 ) ÷ 377] x 100 = 69.5%
Formula
Percentage change = [(639 - 377) / 377] x 100
Subtract the new number by the original number
639 - 377 = 262
262 ÷ 377 = 0.6949602122015915
0.6949602122015915 x 100 = 69.5%