-31.82% is the change from 198 to 135
Calculation steps:
[( 135 - 198 ) ÷ 198] x 100 = -31.82%
Formula
Percentage change = [(135 - 198) / 198] x 100
Subtract the new number by the original number
135 - 198 = -63
-63 ÷ 198 = -0.3181818181818182
-0.3181818181818182 x 100 = -31.82%