-88.34% is the change from 609 to 71
Calculation steps:
[( 71 - 609 ) ÷ 609] x 100 = -88.34%
Formula
Percentage change = [(71 - 609) / 609] x 100
Subtract the new number by the original number
71 - 609 = -538
-538 ÷ 609 = -0.8834154351395731
-0.8834154351395731 x 100 = -88.34%