-48.98% is the change from 492 to 251
Calculation steps:
[( 251 - 492 ) ÷ 492] x 100 = -48.98%
Formula
Percentage change = [(251 - 492) / 492] x 100
Subtract the new number by the original number
251 - 492 = -241
-241 ÷ 492 = -0.4898373983739837
-0.4898373983739837 x 100 = -48.98%