91.1% is the change from 337 to 644
Calculation steps:
[( 644 - 337 ) ÷ 337] x 100 = 91.1%
Formula
Percentage change = [(644 - 337) / 337] x 100
Subtract the new number by the original number
644 - 337 = 307
307 ÷ 337 = 0.9109792284866469
0.9109792284866469 x 100 = 91.1%