-80.52% is the change from 503 to 98
Calculation steps:
[( 98 - 503 ) ÷ 503] x 100 = -80.52%
Formula
Percentage change = [(98 - 503) / 503] x 100
Subtract the new number by the original number
98 - 503 = -405
-405 ÷ 503 = -0.805168986083499
-0.805168986083499 x 100 = -80.52%