-70.14% is the change from 509 to 152
Calculation steps:
[( 152 - 509 ) ÷ 509] x 100 = -70.14%
Formula
Percentage change = [(152 - 509) / 509] x 100
Subtract the new number by the original number
152 - 509 = -357
-357 ÷ 509 = -0.7013752455795678
-0.7013752455795678 x 100 = -70.14%