-43.4% is the change from 530 to 300
Calculation steps:
[( 300 - 530 ) ÷ 530] x 100 = -43.4%
Formula
Percentage change = [(300 - 530) / 530] x 100
Subtract the new number by the original number
300 - 530 = -230
-230 ÷ 530 = -0.4339622641509434
-0.4339622641509434 x 100 = -43.4%