-65.78% is the change from 491 to 168
Calculation steps:
[( 168 - 491 ) ÷ 491] x 100 = -65.78%
Formula
Percentage change = [(168 - 491) / 491] x 100
Subtract the new number by the original number
168 - 491 = -323
-323 ÷ 491 = -0.6578411405295316
-0.6578411405295316 x 100 = -65.78%