91.32% is the change from 334 to 639
Calculation steps:
[( 639 - 334 ) ÷ 334] x 100 = 91.32%
Formula
Percentage change = [(639 - 334) / 334] x 100
Subtract the new number by the original number
639 - 334 = 305
305 ÷ 334 = 0.9131736526946108
0.9131736526946108 x 100 = 91.32%