-18.3% is the change from 601 to 491
Calculation steps:
[( 491 - 601 ) ÷ 601] x 100 = -18.3%
Formula
Percentage change = [(491 - 601) / 601] x 100
Subtract the new number by the original number
491 - 601 = -110
-110 ÷ 601 = -0.18302828618968386
-0.18302828618968386 x 100 = -18.3%