156.57% is the change from 251 to 644
Calculation steps:
[( 644 - 251 ) ÷ 251] x 100 = 156.57%
Formula
Percentage change = [(644 - 251) / 251] x 100
Subtract the new number by the original number
644 - 251 = 393
393 ÷ 251 = 1.5657370517928286
1.5657370517928286 x 100 = 156.57%