-95.45% is the change from 505 to 23
Calculation steps:
[( 23 - 505 ) ÷ 505] x 100 = -95.45%
Formula
Percentage change = [(23 - 505) / 505] x 100
Subtract the new number by the original number
23 - 505 = -482
-482 ÷ 505 = -0.9544554455445544
-0.9544554455445544 x 100 = -95.45%