156.97% is the change from 251 to 645
Calculation steps:
[( 645 - 251 ) ÷ 251] x 100 = 156.97%
Formula
Percentage change = [(645 - 251) / 251] x 100
Subtract the new number by the original number
645 - 251 = 394
394 ÷ 251 = 1.5697211155378485
1.5697211155378485 x 100 = 156.97%