-87.69% is the change from 674 to 83
Calculation steps:
[( 83 - 674 ) ÷ 674] x 100 = -87.69%
Formula
Percentage change = [(83 - 674) / 674] x 100
Subtract the new number by the original number
83 - 674 = -591
-591 ÷ 674 = -0.8768545994065282
-0.8768545994065282 x 100 = -87.69%