-69.6% is the change from 250 to 76
Calculation steps:
[( 76 - 250 ) ÷ 250] x 100 = -69.6%
Formula
Percentage change = [(76 - 250) / 250] x 100
Subtract the new number by the original number
76 - 250 = -174
-174 ÷ 250 = -0.696
-0.696 x 100 = -69.6%
Example