-45.05% is the change from 515 to 283
Calculation steps:
[( 283 - 515 ) ÷ 515] x 100 = -45.05%
Formula
Percentage change = [(283 - 515) / 515] x 100
Subtract the new number by the original number
283 - 515 = -232
-232 ÷ 515 = -0.45048543689320386
-0.45048543689320386 x 100 = -45.05%