-92.12% is the change from 660 to 52
Calculation steps:
[( 52 - 660 ) ÷ 660] x 100 = -92.12%
Formula
Percentage change = [(52 - 660) / 660] x 100
Subtract the new number by the original number
52 - 660 = -608
-608 ÷ 660 = -0.9212121212121213
-0.9212121212121213 x 100 = -92.12%