-42.45% is the change from 530 to 305
Calculation steps:
[( 305 - 530 ) ÷ 530] x 100 = -42.45%
Formula
Percentage change = [(305 - 530) / 530] x 100
Subtract the new number by the original number
305 - 530 = -225
-225 ÷ 530 = -0.42452830188679247
-0.42452830188679247 x 100 = -42.45%