-95.05% is the change from 505 to 25
Calculation steps:
[( 25 - 505 ) ÷ 505] x 100 = -95.05%
Formula
Percentage change = [(25 - 505) / 505] x 100
Subtract the new number by the original number
25 - 505 = -480
-480 ÷ 505 = -0.9504950495049505
-0.9504950495049505 x 100 = -95.05%