-84.07% is the change from 609 to 97
Calculation steps:
[( 97 - 609 ) ÷ 609] x 100 = -84.07%
Formula
Percentage change = [(97 - 609) / 609] x 100
Subtract the new number by the original number
97 - 609 = -512
-512 ÷ 609 = -0.8407224958949097
-0.8407224958949097 x 100 = -84.07%