-61.4% is the change from 500 to 193
Calculation steps:
[( 193 - 500 ) ÷ 500] x 100 = -61.4%
Formula
Percentage change = [(193 - 500) / 500] x 100
Subtract the new number by the original number
193 - 500 = -307
-307 ÷ 500 = -0.614
-0.614 x 100 = -61.4%