-59.2% is the change from 250 to 102
Calculation steps:
[( 102 - 250 ) ÷ 250] x 100 = -59.2%
Formula
Percentage change = [(102 - 250) / 250] x 100
Subtract the new number by the original number
102 - 250 = -148
-148 ÷ 250 = -0.592
-0.592 x 100 = -59.2%