-36.65% is the change from 251 to 159
Calculation steps:
[( 159 - 251 ) ÷ 251] x 100 = -36.65%
Formula
Percentage change = [(159 - 251) / 251] x 100
Subtract the new number by the original number
159 - 251 = -92
-92 ÷ 251 = -0.3665338645418327
-0.3665338645418327 x 100 = -36.65%