-63.15% is the change from 521 to 192
Calculation steps:
[( 192 - 521 ) ÷ 521] x 100 = -63.15%
Formula
Percentage change = [(192 - 521) / 521] x 100
Subtract the new number by the original number
192 - 521 = -329
-329 ÷ 521 = -0.6314779270633397
-0.6314779270633397 x 100 = -63.15%