-48.01% is the change from 402 to 209
Calculation steps:
[( 209 - 402 ) ÷ 402] x 100 = -48.01%
Formula
Percentage change = [(209 - 402) / 402] x 100
Subtract the new number by the original number
209 - 402 = -193
-193 ÷ 402 = -0.48009950248756217
-0.48009950248756217 x 100 = -48.01%