99.1% is the change from 335 to 667
Calculation steps:
[( 667 - 335 ) ÷ 335] x 100 = 99.1%
Formula
Percentage change = [(667 - 335) / 335] x 100
Subtract the new number by the original number
667 - 335 = 332
332 ÷ 335 = 0.991044776119403
0.991044776119403 x 100 = 99.1%