-80.51% is the change from 313 to 61
Calculation steps:
[( 61 - 313 ) ÷ 313] x 100 = -80.51%
Formula
Percentage change = [(61 - 313) / 313] x 100
Subtract the new number by the original number
61 - 313 = -252
-252 ÷ 313 = -0.805111821086262
-0.805111821086262 x 100 = -80.51%