-53.08% is the change from 211 to 99
Calculation steps:
[( 99 - 211 ) ÷ 211] x 100 = -53.08%
Formula
Percentage change = [(99 - 211) / 211] x 100
Subtract the new number by the original number
99 - 211 = -112
-112 ÷ 211 = -0.5308056872037915
-0.5308056872037915 x 100 = -53.08%