153.54% is the change from 254 to 644
Calculation steps:
[( 644 - 254 ) ÷ 254] x 100 = 153.54%
Formula
Percentage change = [(644 - 254) / 254] x 100
Subtract the new number by the original number
644 - 254 = 390
390 ÷ 254 = 1.5354330708661417
1.5354330708661417 x 100 = 153.54%