-67.04% is the change from 270 to 89
Calculation steps:
[( 89 - 270 ) ÷ 270] x 100 = -67.04%
Formula
Percentage change = [(89 - 270) / 270] x 100
Subtract the new number by the original number
89 - 270 = -181
-181 ÷ 270 = -0.6703703703703704
-0.6703703703703704 x 100 = -67.04%