-80.86% is the change from 512 to 98
Calculation steps:
[( 98 - 512 ) ÷ 512] x 100 = -80.86%
Formula
Percentage change = [(98 - 512) / 512] x 100
Subtract the new number by the original number
98 - 512 = -414
-414 ÷ 512 = -0.80859375
-0.80859375 x 100 = -80.86%