-92.99% is the change from 485 to 34
Calculation steps:
[( 34 - 485 ) ÷ 485] x 100 = -92.99%
Formula
Percentage change = [(34 - 485) / 485] x 100
Subtract the new number by the original number
34 - 485 = -451
-451 ÷ 485 = -0.9298969072164949
-0.9298969072164949 x 100 = -92.99%