-77.74% is the change from 319 to 71
Calculation steps:
[( 71 - 319 ) ÷ 319] x 100 = -77.74%
Formula
Percentage change = [(71 - 319) / 319] x 100
Subtract the new number by the original number
71 - 319 = -248
-248 ÷ 319 = -0.7774294670846394
-0.7774294670846394 x 100 = -77.74%