-60.65% is the change from 521 to 205
Calculation steps:
[( 205 - 521 ) ÷ 521] x 100 = -60.65%
Formula
Percentage change = [(205 - 521) / 521] x 100
Subtract the new number by the original number
205 - 521 = -316
-316 ÷ 521 = -0.6065259117082533
-0.6065259117082533 x 100 = -60.65%