-84.16% is the change from 322 to 51
Calculation steps:
[( 51 - 322 ) ÷ 322] x 100 = -84.16%
Formula
Percentage change = [(51 - 322) / 322] x 100
Subtract the new number by the original number
51 - 322 = -271
-271 ÷ 322 = -0.8416149068322981
-0.8416149068322981 x 100 = -84.16%