-80.36% is the change from 494 to 97
Calculation steps:
[( 97 - 494 ) ÷ 494] x 100 = -80.36%
Formula
Percentage change = [(97 - 494) / 494] x 100
Subtract the new number by the original number
97 - 494 = -397
-397 ÷ 494 = -0.8036437246963563
-0.8036437246963563 x 100 = -80.36%