-82.84% is the change from 612 to 105
Calculation steps:
[( 105 - 612 ) ÷ 612] x 100 = -82.84%
Formula
Percentage change = [(105 - 612) / 612] x 100
Subtract the new number by the original number
105 - 612 = -507
-507 ÷ 612 = -0.8284313725490197
-0.8284313725490197 x 100 = -82.84%