-65.98% is the change from 291 to 99
Calculation steps:
[( 99 - 291 ) ÷ 291] x 100 = -65.98%
Formula
Percentage change = [(99 - 291) / 291] x 100
Subtract the new number by the original number
99 - 291 = -192
-192 ÷ 291 = -0.6597938144329897
-0.6597938144329897 x 100 = -65.98%