-84.15% is the change from 612 to 97
Calculation steps:
[( 97 - 612 ) ÷ 612] x 100 = -84.15%
Formula
Percentage change = [(97 - 612) / 612] x 100
Subtract the new number by the original number
97 - 612 = -515
-515 ÷ 612 = -0.8415032679738562
-0.8415032679738562 x 100 = -84.15%