-20.65% is the change from 402 to 319
Calculation steps:
[( 319 - 402 ) ÷ 402] x 100 = -20.65%
Formula
Percentage change = [(319 - 402) / 402] x 100
Subtract the new number by the original number
319 - 402 = -83
-83 ÷ 402 = -0.2064676616915423
-0.2064676616915423 x 100 = -20.65%