-83.46% is the change from 272 to 45
Calculation steps:
[( 45 - 272 ) ÷ 272] x 100 = -83.46%
Formula
Percentage change = [(45 - 272) / 272] x 100
Subtract the new number by the original number
45 - 272 = -227
-227 ÷ 272 = -0.8345588235294118
-0.8345588235294118 x 100 = -83.46%