-77.8% is the change from 509 to 113
Calculation steps:
[( 113 - 509 ) ÷ 509] x 100 = -77.8%
Formula
Percentage change = [(113 - 509) / 509] x 100
Subtract the new number by the original number
113 - 509 = -396
-396 ÷ 509 = -0.7779960707269156
-0.7779960707269156 x 100 = -77.8%