-67.75% is the change from 493 to 159
Calculation steps:
[( 159 - 493 ) ÷ 493] x 100 = -67.75%
Formula
Percentage change = [(159 - 493) / 493] x 100
Subtract the new number by the original number
159 - 493 = -334
-334 ÷ 493 = -0.6774847870182555
-0.6774847870182555 x 100 = -67.75%