-66.08% is the change from 398 to 135
Calculation steps:
[( 135 - 398 ) ÷ 398] x 100 = -66.08%
Formula
Percentage change = [(135 - 398) / 398] x 100
Subtract the new number by the original number
135 - 398 = -263
-263 ÷ 398 = -0.6608040201005025
-0.6608040201005025 x 100 = -66.08%