fix relative volume adjustment

src/tidal/service.ts

@@ -58,7 +58,7 @@ export class TidalService extends BaseService<TidalClient> {
 			const req = await this.getVolume();
 			if (req.successful) {
 				const volume = req.result as number;
-				const wantedVolume = volume + value;
+				const wantedVolume = this.percentageToDecimal(volume) + value;
 				const clampWantedVolume = this.clamp(wantedVolume);
 				return await this.setVolumeToTidal(clampWantedVolume);
 			}