-63.53% is the change from 521 to 190
Calculation steps:
[( 190 - 521 ) ÷ 521] x 100 = -63.53%
Formula
Percentage change = [(190 - 521) / 521] x 100
Subtract the new number by the original number
190 - 521 = -331
-331 ÷ 521 = -0.6353166986564299
-0.6353166986564299 x 100 = -63.53%