-86.12% is the change from 490 to 68
Calculation steps:
[( 68 - 490 ) ÷ 490] x 100 = -86.12%
Formula
Percentage change = [(68 - 490) / 490] x 100
Subtract the new number by the original number
68 - 490 = -422
-422 ÷ 490 = -0.8612244897959184
-0.8612244897959184 x 100 = -86.12%