-21.91% is the change from 251 to 196
Calculation steps:
[( 196 - 251 ) ÷ 251] x 100 = -21.91%
Formula
Percentage change = [(196 - 251) / 251] x 100
Subtract the new number by the original number
196 - 251 = -55
-55 ÷ 251 = -0.21912350597609562
-0.21912350597609562 x 100 = -21.91%