-7.21% is the change from 305 to 283
Calculation steps:
[( 283 - 305 ) ÷ 305] x 100 = -7.21%
Formula
Percentage change = [(283 - 305) / 305] x 100
Subtract the new number by the original number
283 - 305 = -22
-22 ÷ 305 = -0.07213114754098361
-0.07213114754098361 x 100 = -7.21%