-31.8% is the change from 283 to 193
Calculation steps:
[( 193 - 283 ) ÷ 283] x 100 = -31.8%
Formula
Percentage change = [(193 - 283) / 283] x 100
Subtract the new number by the original number
193 - 283 = -90
-90 ÷ 283 = -0.31802120141342755
-0.31802120141342755 x 100 = -31.8%