-91.14% is the change from 508 to 45
Calculation steps:
[( 45 - 508 ) ÷ 508] x 100 = -91.14%
Formula
Percentage change = [(45 - 508) / 508] x 100
Subtract the new number by the original number
45 - 508 = -463
-463 ÷ 508 = -0.9114173228346457
-0.9114173228346457 x 100 = -91.14%