-94.02% is the change from 251 to 15
Calculation steps:
[( 15 - 251 ) ÷ 251] x 100 = -94.02%
Formula
Percentage change = [(15 - 251) / 251] x 100
Subtract the new number by the original number
15 - 251 = -236
-236 ÷ 251 = -0.9402390438247012
-0.9402390438247012 x 100 = -94.02%