-92.59% is the change from 661 to 49
Calculation steps:
[( 49 - 661 ) ÷ 661] x 100 = -92.59%
Formula
Percentage change = [(49 - 661) / 661] x 100
Subtract the new number by the original number
49 - 661 = -612
-612 ÷ 661 = -0.9258698940998488
-0.9258698940998488 x 100 = -92.59%