-63.87% is the change from 274 to 99
Calculation steps:
[( 99 - 274 ) ÷ 274] x 100 = -63.87%
Formula
Percentage change = [(99 - 274) / 274] x 100
Subtract the new number by the original number
99 - 274 = -175
-175 ÷ 274 = -0.6386861313868614
-0.6386861313868614 x 100 = -63.87%