-29.6% is the change from 402 to 283
Calculation steps:
[( 283 - 402 ) ÷ 402] x 100 = -29.6%
Formula
Percentage change = [(283 - 402) / 402] x 100
Subtract the new number by the original number
283 - 402 = -119
-119 ÷ 402 = -0.2960199004975124
-0.2960199004975124 x 100 = -29.6%