84.53% is the change from 349 to 644
Calculation steps:
[( 644 - 349 ) ÷ 349] x 100 = 84.53%
Formula
Percentage change = [(644 - 349) / 349] x 100
Subtract the new number by the original number
644 - 349 = 295
295 ÷ 349 = 0.8452722063037249
0.8452722063037249 x 100 = 84.53%