-97.45% is the change from 157 to 4
Calculation steps:
[( 4 - 157 ) ÷ 157] x 100 = -97.45%
Formula
Percentage change = [(4 - 157) / 157] x 100
Subtract the new number by the original number
4 - 157 = -153
-153 ÷ 157 = -0.9745222929936306
-0.9745222929936306 x 100 = -97.45%