-96.42% is the change from 530 to 19
Calculation steps:
[( 19 - 530 ) ÷ 530] x 100 = -96.42%
Formula
Percentage change = [(19 - 530) / 530] x 100
Subtract the new number by the original number
19 - 530 = -511
-511 ÷ 530 = -0.9641509433962264
-0.9641509433962264 x 100 = -96.42%