-3.98% is the change from 251 to 241
Calculation steps:
[( 241 - 251 ) ÷ 251] x 100 = -3.98%
Formula
Percentage change = [(241 - 251) / 251] x 100
Subtract the new number by the original number
241 - 251 = -10
-10 ÷ 251 = -0.0398406374501992
-0.0398406374501992 x 100 = -3.98%