-93.08% is the change from 491 to 34
Calculation steps:
[( 34 - 491 ) ÷ 491] x 100 = -93.08%
Formula
Percentage change = [(34 - 491) / 491] x 100
Subtract the new number by the original number
34 - 491 = -457
-457 ÷ 491 = -0.9307535641547862
-0.9307535641547862 x 100 = -93.08%