-62% is the change from 521 to 198
Calculation steps:
[( 198 - 521 ) ÷ 521] x 100 = -62%
Formula
Percentage change = [(198 - 521) / 521] x 100
Subtract the new number by the original number
198 - 521 = -323
-323 ÷ 521 = -0.6199616122840691
-0.6199616122840691 x 100 = -62%